Strathprints logo
Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

Full characterization of the quantum spiral bandwidth of entangled biphotons

Miatto, Filippo M. and Yao, Alison M. and Barnett, Stephen M. (2011) Full characterization of the quantum spiral bandwidth of entangled biphotons. Physical Review A, 83 (3). 033816. ISSN 1050-2947

[img]
Preview
PDF
QuantumSpiral.pdf - Published Version

Download (1MB) | Preview

Abstract

Spontaneous parametric down-conversion has been shown to be a reliable source of entangled photons. Among the wide range of properties shown to be entangled, it is the orbital angular momentum that is the focus of our study. We investigate, in particular, the bi-photon state generated using a Gaussian pump beam. We derive an expression for the simultaneous correlations in the orbital angular momentum, l, and radial momentum, p, of the down-converted Laguerre-Gaussian beams. Our result allows us, for example, to calculate the spiral bandwidth with no restriction on the geometry of the beams: l, p, and the beam widths are all free parameters. Moreover, we show that, with the usual paraxial and collinear approximations, a fully analytic expression for the correlations can be derived.

Item type: Article
ID code: 30988
Keywords: orbital angular-momentum, light, photons, states, Optics. Light, Atomic and Molecular Physics, and Optics
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Physics
Depositing user: Pure Administrator
Date Deposited: 13 May 2011 13:25
Last modified: 26 Mar 2015 21:58
URI: http://strathprints.strath.ac.uk/id/eprint/30988

Actions (login required)

View Item View Item